Trace 120 years of the history of the group managed by the Poulain family.

Founded in 1896 by Auguste Poulain, the company Marbres du Boulonnais is nowadays on the rise thanks to its descendants-managers. The company has turned into a group that includes today 3 branches and around twenty companies around the globe.

Biodiversity, a priority

Les granulats du Groupe CB include 7 quarries, each one puts in place effective tools for the natural reconstruction of the quarries. Sheep, water bodies, hives, and rare species are finding their place in quarry. All those actions meet to build the "after-quarry".

Quarry worker: our job!

As one of the leaders amongst the independant quarry operators in France, les granulats du Groupe CB offers a wide range of products-from traditional material to specific technical applications and including innovative recycled products. We are specialised in extracting and transforming materials, and we produce aggregates to meet all of the industryn construction and public works needs. We take par to the construction of major infrastructures, to local urban projects and community program.